import strutils, math
proc solve(): int =
xy = readLine(stdin).split(' ').map(parseDouble)
x = xy[0]
y = xy[1]
return ans
echo(solve)
aW1wb3J0IHN0cnV0aWxzLCBtYXRoCgpwcm9jIHNvbHZlKCk6IGludCA9Cgl4eSA9IHJlYWRMaW5lKHN0ZGluKS5zcGxpdCgnICcpLm1hcChwYXJzZURvdWJsZSkKCXggPSB4eVswXQoJeSA9IHh5WzFdCglhbnMgPSBzcXJ0KHgqeCt5KnkgKyAxLjApLmZsb29yKCkudG9JbnQoKQoJcmV0dXJuIGFucwoKZWNobyhzb2x2ZSk=